Burj Khalifa - World's Tallest Building

Burj Khalifa Burj Khalifa برج خليفة Burj Khalifa in October 2012 Former names Burj Dubai Record height Tallest in the ...

Burj Khalifa.jpg

Burj Khalifa

Burj Khalifa
برج خليفة
Burj Khalifa in October 2012
Former names Burj Dubai
Record height
Tallest in the world since 2009[I]
Preceded by Taipei 101
General information
Type Mixed-use
Architectural style Neo-futurism
Location 1 Sheikh Mohammed bin Rashid Boulevard, Dubai, United Arab Emirates
Coordinates 25°11′49.7″N 55°16′26.8″ECoordinates: 25°11′49.7″N 55°16′26.8″E
Construction started 6 January 2004
Completed 31 December 2009[1]
Opening 4 January 2010[2]
Cost USD $ 1.5 billion[3]
Architectural 828 m (2,717 ft)[4]
Tip 829.8 m (2,722 ft)[4]
Roof 828 m (2,717 ft)
Top floor 584.5 m (1,918 ft) (Level 154)[4]
Observatory 555.7 m (1,823 ft) (Level 148)[4]
Technical details
Floor count 154 usable floors[4][5]
plus 9 maintenance levels, 46 spire levels,[6] and 2 below-ground parking levels
Floor area 309,473 m2 (3,331,100 sq ft)[4]
Lifts/elevators 57 (55 single deck and 2 double deck), made by Otis Elevator Company
Design and construction
Architect Adrian Smith at SOM
Developer Emaar Properties[4]
Structural engineer Bill Baker at SOM[7]
Main contractor
Burj Khalifa (Arabic: برج خليفة‎, "Khalifa Tower", pronounced English /ˈbɜːr kəˈlfə/), known as Burj Dubai before its inauguration, is a megatall skyscraper in Dubai, United Arab Emirates. It is the tallest artificial structure in the world, standing at 829.8 m (2,722 ft).[4][9]
Construction of Burj Khalifa began in 2004, with the exterior completed in 2009. The primary structure is reinforced concrete. The building opened in 2010, as part of the new development called Downtown Dubai. It is designed to be the centerpiece of large-scale, mixed-use development. The decision to build the building is reportedly based on the government's decision to diversify from an oil-based economy, and for Dubai to gain international recognition. The building was named in honor of the ruler of Abu Dhabi and president of the United Arab Emirates, Khalifa bin Zayed Al Nahyan; Abu Dhabi and the UAE government lent Dubai money to pay its debts. The building broke numerous height records.
Burj Khalifa was designed by Adrian Smith then of Skidmore, Owings and Merrill (SOM), whose firm also designed the Willis Tower and the One World Trade Center. Hyder Consulting was chosen to be the supervising engineer with NORR Group Consultants International Limited chosen to supervise the architecture of the project. The design of Burj Khalifa is derived from patterning systems embodied in Islamic architecture, incorporating cultural and historical elements particular to the region such as the spiral minaret. The Y-shaped plan is designed for residential and hotel usage. A buttressed core structural system is used to support the height of the building, and the cladding system is designed to withstand Dubai's summer temperatures. A total of 57 elevators and 8 escalators are installed, with the elevators having a capacity of 12 to 14 people per cabin.
Critical reception to Burj Khalifa has been generally positive, and the building received many awards. However, the labor issues during construction have been controversial, since the building was built primarily by workers from South and East Asia, who earned low wages and were reportedly housed in poor conditions. The center of gravity is in the bottom because it stops it from moving from earthquakes.



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Benjamin Olajide's Blog: Burj Khalifa - World's Tallest Building
Burj Khalifa - World's Tallest Building
Benjamin Olajide's Blog
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